Linearization.scala

class BaseIntQueue {
  private val buffer = new ArrayBuffer[Int]
  def put(x: Int) = buffer += x
  def get() = buffer.remove(0)
}

trait Double extends BaseIntQueue {
  override def put(x: Int) = super.put(x * 2)
}

trait Inc extends BaseIntQueue {
  override def put(x: Int) = super.put(x + 1)
}

val q = new BaseIntQueue with Double with Inc
q.put(0)
q.put(10)
println(q.get())  // outputs 2
println(q.get())  // and 22